hoverfly: I had similar a few years back , came home from work went int kitchen and made a cuppa sat on a stool looking out the kitchen window. There was a large space ,something was wrong, some scumbag a/hole had stolen my motorbike.. February 21, 2018, 09:24:58

Reman: I just half woke up, opened my eyes to check the time. and while doing this I subconsciously noticed something wrong with the shape of shadows on the other side of the room. That woke me up with a jolt!!! It seems I've got so used to seeing my camera hex perched up on the set of draws in the corner of my bedroom that the area now looks strangely empty without it (I took it apart on Sunday to begin the rebuild into its new Y6 frame)...... And now I'm wide awake at bloody half one in the morning....... And feeling like a paranoid pillock. February 21, 2018, 01:27:14

Author
Topic: Malyan M150 3D Printer (Read 794 times)

At last I';ve gotten round to opening last years Christmas present, a Malyan M150. The box has finally left the living room floor and the cats have lost their make-shift lounger.

The unit comes mostly assembled with just the two main parts of frame to screw together, fan and filament spool holder to attach and the wiring loom to plug in. An included SD Card has program files and humorous chinglish instruction manuals: "flip on the power button hold onto your hat" and "drawings can quickly become a corpse". haha

You must have a very busy life and amazing self control to have that sitting in full display begging you to open it.Can';t believe you lasted that long before opening. I have difficulty lasting a few hrs to get through work before I can, at minimum open some new toy

Amazing self control, congrats on your ';new'; printer. Now lets see some prints

Ah the fun! I have the duplicator I3 version and its currently getting upgraded...Couple of things:

- Motherboard power connector is terrible and many have burn';t out. I replaced mine with an XT60- The Alu bed base is pretty thin, be careful it doesn';t warp- I use a LokBuild pad on my bed. It has changed my life.- Look into Z-braces as they improve rigidity and prints

I find my printer does a good job! now I';m in the process of trying to make it great...

Cheers ched. lol. Mostly always too busy and never enough time, but I';m gonna find a few hours this weekend to get printing. I really want to print one of the marble run designs I';ve seen on thingyverse.

Thanks for the helpful info Jeremy. Have you run your alu heatbed with the lokbuild attached directly or added a sheet of glass? I saw the Z-braces and think I';ll print them off pretty soon as they look like a very worthy upgrade.

Cheers ched. lol. Mostly always too busy and never enough time, but I';m gonna find a few hours this weekend to get printing. I really want to print one of the marble run designs I';ve seen on thingyverse.

Ooh marble run. I remember spending days building one when I was an apprentice. With single core wire and soldering it together.......... Happy days.....

So I decided to take a 5 min break from work and make a quick cuppa whilst taking a peek at the printer. A peek led to a quick fiddle (ooo-err). That led to led to me sitting down and setting up the first print. The first test print is underway as I type!

The instructions that came with the printer are pretty awful but I think I';m figuring out the basics. I auto-moved the extruder to the front left corner of the bed and then deactivated the stepper motors so I could move the nozzle around and level the bed. I used a sheet of 80 micron paper for this. Then I manually lifted the extruder (z axis) and fed in the PLA which I';d pre cut into a sharp point. Once I';d figured out how to tell the motor to accept and feed the filament I cleaned it all up and checked the bed height again.

The masking tape-like sheet that came with the printer (3 sheets of) seems to work well and the PLA has adhered nicely.

The bed was quite a pain to get level. The front left, front right and rear left side thumb screws were all very similar and didn';t need too much adjusting. The rear right side was completely different though and I needed to wind it loads more to make the bed level.

I';ve read it';s best to let it cool fully before trying to remove it so I';m hoping that works. The plastic scraper that came with the printer looks a bit rubbish and without a thin or sharp knife edge. I';d be surprised if it doesn';t snap the more delicate parts attached to the print bed.

I see now why there are so many different options for print bed use, like glass, tapes, abs juice, glues etc. And having a sheet of glass that can be removed from the printer before removing the printed item seems sensible as all the hacking at the finished model will throw the print bed out of alignment again meaning it';ll need setting up before every print. I';d prefer to avoid that if possible.

I have this printer. Had to make a number of mods before it was truly stable or usable for longer prints. It flexed way too much tbh, the feed gear slipped and the nozzle blocked a lot. Now it';s dialled in, I haven';t levelled the bed in months or had a single blockage. Tried glass, heats up differentially to the top plate which then moves out of flat. Went to 225x225mm PrintBite right on the heat bed, 9 months old now. Print to the edge (nearly), parts are dead flat and pop straight off as it cools. Happily runs 24hr prints with a good finish. So it';s worth persevering, it can be a great machine.

btw the jerk and acceleration settings are set too high by default. Also calibrate the extrusion feed rate, by default mine fed way way too much 250%. Can be a pain to get it remember settings so easier to put them in Gcode. M92 E*** is the extrusion rate iirc.

I';m obviously still new to the printer and can';t see what causes certain problems but some prints are definitely more successful than others. I';ve discovered 2 of the print bed thumb nuts are de-threaded so I';ve swapped for m3 nuts temporarily. I had to file 2 of the holes on the plate beneath the print bed as well because the threaded bolts were catching badly.

Glad you mentioned the jerk settings. I';m guessing that';s as it sounds? The jerkiness of the motor movements? The print bed jerks real bad during some prints and ruins them.

I started running a print this afternoon. It';s a marble run that';s about 12cm cubed. So far it';s 6.5 hours in and about 7mm high!!! I knew the printer wasn';t exactly fast but at this rate it';ll take days to finish!